Abstract
In order to estimate the stress distributions and the capacity in farm tower silos which depend on the compressibility of cereal grains and wall friction, the compressive properties of cereal grains were formulated using the results of compressive tests in the laboratory. Janssen's formula was then extended so as to include the case of compressibility in grain beds, and μk, the product of coefficient of wall friction μ and lateral to vertical pressure ratio k, were determined by comparing the experimental data of the displacement in model steel bins with the calcuated results.
The stress distributions of a silo in actual scale were estimated by the extended Janssen's formula, and the silo capacity was calculated by using these results.
